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ffc9648a52
When reading data with the polling interface, we need to wait at 1 sampling period to have a sample. For gyroscope and magnetometer, we need to wait for 2 periods before having a correct sample. Not suitable for stable or backporting. Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
39 lines
931 B
C
39 lines
931 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 TDK-InvenSense, Inc.
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*/
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#ifndef INV_MPU_MAGN_H_
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#define INV_MPU_MAGN_H_
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#include <linux/kernel.h>
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#include "inv_mpu_iio.h"
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/* Magnetometer maximum frequency */
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#define INV_MPU_MAGN_FREQ_HZ_MAX 50
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int inv_mpu_magn_probe(struct inv_mpu6050_state *st);
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/**
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* inv_mpu_magn_get_scale() - get magnetometer scale value
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* @st: driver internal state
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*
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* Returns IIO data format.
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*/
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static inline int inv_mpu_magn_get_scale(const struct inv_mpu6050_state *st,
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const struct iio_chan_spec *chan,
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int *val, int *val2)
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{
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*val = 0;
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*val2 = st->magn_raw_to_gauss[chan->address];
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return IIO_VAL_INT_PLUS_MICRO;
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}
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int inv_mpu_magn_set_rate(const struct inv_mpu6050_state *st, int fifo_rate);
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int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st);
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int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val);
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#endif /* INV_MPU_MAGN_H_ */
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